Add help.

diff --git a/src/visualizer.cpp b/src/visualizer.cpp
index 475682ba96e5544a3971fe61442537bf5d507819..721ef1a2ceea6f56e9d9ae1f018cef91488b9ac9 100644 (file)
--- a/src/visualizer.cpp
+++ b/src/visualizer.cpp
@@ -414,6 +414,13 @@ class FindStates : public ASTConsumer
   */
 int main(int argc, char **argv)
 { 
+       if(argc==1 || strncmp(argv[1],"-help",5)==0)
+       {
+               cout<<endl<<" Boost Statechart Viewer - help"<<endl;
+               cout<<"================================"<<endl;
+               cout<<"The program can be used almost the same way as a C compiler. You will typically need to specify locations for all header files except of the files stored in system folder(in Linux: /usr/...) using -I option. Of course you can specify the output filename (-o option). Program displays all diagnostic messages like compilers. If an error occurs the program stops."<<endl<<endl;
+               return 0;
+       }
        string inputFilename = "";
        string outputFilename = "graph.dot"; // initialize output Filename
        DiagnosticOptions dopts;